I've been battling cotton candy algae for a while now with not much success. I maintain nitrates at 0 and phosphates stay 0 to 0.1. Lights are only on for 6 hours. I have a refugium with Chaeto. I took out all the live rock and scrubbed it clean of the cotton candy algae and then covered it in hydrogen peroxide and let it bubble for 5 minutes. All that and its growing back again. I've read that Vibrant has worked well as long as you pull your chaeto first. Any thoughts or other advise?